EXPLANATION OF CROSS-REFERENCE INDEXES WORK PACKAGES
FORMAT AND COLUMNS
1. National Stock Number (NSN) Index Work Package. NSNs in this index are listed in National Item
Identification Number (NIIN) sequence.
STOCK NUMBER Column. This column lists the NSN in NIIN sequence. The NIIN consists of the last
nine digits of the NSN. When using this column to locate an item, ignore the first four digits of the NSN.
However, the complete NSN should be used when ordering items by stock number. For example, if the
NSN is 5385-01-574-1476, the NIIN is 01-574-1476.
FIG. Column. This column lists the number of the figure where the item is identified/located. The figures
are in numerical order in the repair parts list and special tools list work packages.
ITEM Column. The item number identifies the item associated with the figure listed in the adjacent FIG.
column. This item is also identified by the NSN listed on the same line.
2. Part Number (P/N) Index Work Package. Part numbers in this index are listed in ascending
alphanumeric sequence (vertical arrangement of letter and number combinations which places the first
letter or digit of each group in order A through Z, followed by the numbers 0 through 9 and each following
letter or digit in like order).
PART NUMBER Column. Indicates the part number assigned to the item.
FIG. Column. This column lists the number of the figure where the item is identified/located in the repair
parts list and special tools list work packages.
ITEM Column. The item number is the number assigned to the item as it appears in the figure referenced
in the adjacent figure number column."
UOC. The UOC appears in the lower left corner of the Description Column heading. Usable on codes are
shown as "UOC:..." in the Description Column (justified left) on the first line under the applicable
item/nomenclature. Uncoded items are applicable to all models. Identification of the UOCs used in the
Code Used On
Fabrication Instructions. Bulk materials required to manufacture items are listed in the bulk material
functional group of this RPSTL. Part numbers for bulk material are also referenced in the Description
Column of the line item entry for the item to be manufactured/fabricated. Detailed fabrication instructions
for items source coded to be manufactured or fabricated are found in WP 0087 of this technical manual.
Index Numbers. Items which have the word BULK in the figure column will have an index number shown
in the item number column. This index number is a cross-reference between the NSN / Part Number
(P/N) Index work packages and the bulk material list in the repair parts list work package.